On 07/29/2015 10:02 PM, Toni Neubert wrote:
I want to communicate between different platforms using boost interprocess.
I am using vc12 and boost 1.58 on windows 7.
My code below is a very simple example, that should work. But it doesn't for communications between different platforms...
If I create it in x64 and open in win32, the process stuck at a lock at function try_based_lock in boost/int/sync/detail/common_algorithms.hpp
In the other way around: win32 create, x64 open: the process crashes at name_length in segment_manager_helper.hpp while trying to find the name in index (priv_generic_find in segment_manager).
#include <iostream> #include <boost/interprocess/managed_shared_memory.hpp>
int main() { namespace bip = boost::interprocess;
// open in WIN32, create in x64 #ifdef _WIN32 bip::managed_shared_memory msm(bip::open_only, "TestIPC"); #elsif X64 bip::shared_memory_object::remove("TestIPC"); bip::managed_shared_memory msm(bip::create_only, "TestIPC", 4096); msm.construct<uint32_t>("Data")[1](10); #endif
// Get Data and print it auto data = msm.find<uint32_t>("Data"); if (data.second == 1) { std::cout << *data.first << std::endl; } std::cin.ignore();
return 0; }
Does anybody have experience in this? Thank you in advance!
Hello, some things indicate that's not possible to do with boost::interprocess: #1 The internal structure, look at the header struct for example, uses data types that are different in length at 32 vs 64 bit arch. #2 Using a hex editor and looking at the shm for the object shows that there are major differences in the area before your actual data ( which might be safe). The reason for this is #1.And this is the reason for undefined behavior when trying to access it. Regards, Jan